I was actually FTF for one puzzle cache - so I know I can actually do it. The cringing comes when I contemplate whether I have a few hours to spend puzzling over ONE CACHE! Not usually! But then when I went to one of the caches in "Puzzle Canyon" and had it list all the nearby caches, well, that made me cringe.
P.S. You have to solve TG's Who Are You? cache to get the coords to the humongous ammo can with his books in it.
P.P.S. to TG: See, I told you I could send some finders to your cache - now will you send me the Teacher's Edition?